Method and apparatus for making hollow bodies



Feb. 4, 1941. F. A. PARKHURs'r METHOD AND APPARATUS FOR MAKING HOLLOW BODIES Filed May 10, 1939 6 Sheets-Sheet 1 IINvvN-l-UR; MGQQMM A'H'ys Feb. 4,1941.

F. A. PARKHURST METHOD AND APPARATUS FOR MAKING HOLLOW BODIES Filed May 10. 1939 6 Sheets-Shea*l 2 INVEN+DR Febv 4, 1941- F. A. PARKHuRsT 2,230,410.

l METHOD AND APPARATUS FOR MAKING HOLLOW BODIES Filed May 10, 1959 6 Sheets-Sheet I5 /625 a; f5 ff lNvN-i-DR:

TlQE-J MQQM,

Feb. 4, 1941. F. A. PARKHuRs-r 2,230,410

METHOD AND APPARATUS F0R-MAKING-HOLILV|0ZW BODIES l Filed my 1o, 193.9 e sheds-sheet 4 Feb. 4, 1941. F. A. PARKHuRs-r METHOD AND APPARATUS FOR MAKING HOLLOW BODIES 'led May 10, 1939 6 Sheets-Shes?I 5 Feb. 4, 1941. F. A. PARKHuRsT METHOD AND APPARATUS FOR MAKING HOLLOW BODIES Filed May'lO, 1959 6 Sheets-Sheet 6 Patented Feb. 4, 1941 v v UNITED STATES PATENT OFFICEA I METHOD AND APPARATUS FOR MAKING l HOLLOW BODIES Frederic A. Parkhurst, Suilield, Conn., assignor to Monsanto Chemical Company, St. Louis, Mo., a corporation of Delaware Application May 10, 1939, Serial N0. 272,803 19 Claims. (Cl. 93-77) This invention relates to the manufacture, for controlling the position of the matrices on from sheet material, of hollow bodies, especially, the dial or rotating carrier.

although not exclusively, to tubular vcontainers The invention is herein illustrated in connecfor tooth brushes or similar articles, and has for tion with a machine for forming the body porits general object the provision of a method and tions of containers of the type shown in Fig. 1. an automatic apparatus whereby satisfactory As shown in said figure, a container of this type. containers of this character can be rapidly and comprises a tubular body portion 20, which is economically produced in quantities. the part produced by the machine hereinafter The more particular objects of the invention described, said body portionhaving open ends will best be understood from the vfollowing dewhich are subsequently closed by heads 2l ap- 1@ scription of the construction and operation of plied by means forming no portion of the present the apparatus shown in the accompanying drawinvention. As shownI in Fig. 1, the body portion ings and by which said invention may be carried 20 is of'semi-cylindrical form, that is to say, is

` into eiect, this particular apparatus having, of substantially semi-circular cross section, a1-

however, been chosen for purposes of exemplithough it will be understood that the particular 15 cation merely, it being obvious that said invencross-sectional shape is subject to considerable tion, as defined by the claims hereunto appended, modification according to the requirements. may be otherwise embodied and practiced with-v Referring particularly to Figs. 2 and 5 the out departure from the spirit and scope thereof. machine frame comprises a bed 22 carried by In said drawings: Asuitable supports 23 and 24 and from which rises 20 Fig. 1 is a perspective view of the parts rea pair of uprights 25together with certain other quired to form a container, the main or body attached parts, the'whole aifording the necesportion of which is produced bythe machine sary supports, guides, bearings, etc. for the variherein shown. ous moving parts of the machine. The uprights Fig. 2 is a longitudinal vertical section of the 25 are'formed with vertical guides for a ram 25 machine, 25 adapted to be reclprocated toward and from Fig. 3 is a horizontal section taken substanthe bed by means of an eccentric 21 surrounded tially on the line 3,-3, Fig. 2, certain of the parts by an eccentric strap 28 connected with said being omitted to avoid repetition and thus sim-` ramby an adjustable pitman 29, said eccentric plify the view. being secured to a shaft 30 journalled in the 30 Fig. 4 is a perspective view of one of the matupper ends of the uprights 25 and having a belt rices or holders for the partially completed conpulley 3| through which power to rotate said tainer bodies. shaft may be applied from any suitable source.l

Fig. 5 is a front elevation, partly broken away, A web of sheet material W (Fig. 5) is supplied of the machine, with certain of the parts again to the machine from a suitable source, said sheet 35 omitted. material being oi' any character suitable for the Fig. 6 is an enlarged vertical section taken subformation of the container body. For the purstantially on the line 5 6, Fig. 2.' poses of the present description it may be as- Fig. 7 is a plan view of the parts shown in sumed to be a sheet of plastic material, such as Fig.- 6. cellulose acetate. The web W is intermittently 40 Figs. 8 and 9 are views similar to Fig. 6 but fed into the machine between upper and lower showing the parts in diiferent positions. feed rollers 32 and 33 (see also Figs. 6, 7 and 13)' Fig. 10 is a vertical section taken substantially carried respectively by parallel shafts 34 and 35 on the line Ill-I0, Fig. 3. Journalled in uprights 36 rising from the bed 22,

5 Fig. 11 is a schematic view illustrating the said shafts being connected for rotation in uni-` 46 application of the cementing liquid. son in opposite directions by gears 3l so propor- Fig. 12 illustrates the application of comtioned as tocause said rollers 32 and 33 to travel pressed air. atthe same peripheral speed. Secured to the Fig. 13 is a fragmentary view of the driving shaft 34 is a ratchet 38`en'gagedby a pawl 39 mechanism for the feed rolls. pivoted to a pawl carrler40 mounted to oscil- 5o Fig. 14 is a sectional view of the conveyor late on the shaft 34. Secured to or formed in- Which receives the completed container bodies, tegral with the pawl carrier 40 is a pinion '4| together with portions of the driving mechanism y which is engaged by a rack 42 guided for vertitherefor. 'T' cal movement in arms 43 extending from one of Fig. 15 is a perspective view of the main cam the uprights 25. The rack 42 carries a pin 44 which is engaged bythe slotted arms 45 of a bell crank pivoted at 46 and the other arm 41 of which is connected by a pitman 48 with an eccentric strap 48 encircling an eccentric 58 on 5 the shaft 38.

As the web W is intermittently advanced by the feed rolls 32, 33, its forward end is fed into forming mechanism most clearly shown in Figs. 6 to 8. Said mechanism comprises a die support 6| secured to and rising from the bed 22 and carrying a forming die 62, a gauge plate 63, a punch 64 constituting a combined cutter and former or bender, and a combined guide and cutter block 65. The die 62 is formed with a cavity 66 of the general form of the container body to be produced, having a curved concave inner surface corresponding to the curved portion of said body, but .posed in the direction from which the web W is advanced. The block 65 is supported by the bed 22 in parallel spaced relation to the die support 6|. 'I'he gauge plate 63 is guided for vertical movement between the support 6| and block 65 and is normally held in the elevated position shown in Fig. 6, andin which it substantially covers the 'open side of the die cavity 66, by means of springs 61 (see also Fig. 2), encircling rods 68 depending from the bed 22, and interposed between heads 68 on said rods and a cross head 18 which is engaged by stems 1| depending from the gauge plate 63 and guided in suitable openings in the bed 22. The gauge plate 63 is periodically depressed, against the tension of the spring 61, from the position shown in Fig. 6 to the position shown in Fig. 8, to expose the open side of the die cavity, by an arm 8| pivoted at 82 between ears 83 on the bed 22 and having a rounded end 84 engaging an opening 85 in said gauge plate, said arm being periodically engaged, 40 to so depress the gauge plate, by a plunger 86 depending from the head 88 of the ram 26, and

having its upper end movable into an opening 81 in said head, sa'id plunger being, however, normally held in the depressed position shown in 45 Fig. 5 by a spring 88 encircling the same and interposed between a shoulder 89 thereon and a bushing 98 carried by the ram head and in which said plunger is guided.

The punch 64, which is located in alinement 5 with the gauge plate 63 and is likewise guided between the support 6| and block 65, is supported by stems 8| (see also Fig. 2) guided for vertical movement in a cap plate 92, bolted or otherwise secured to the top of the support 6|, 55 and normally held in the elevated position shown in Fig. 6 by springs 83 interposed between said cap plate and heads 84 on said stems, but being adapted to be depressed, against the tension of said springs, from the position shown in Figs. 60 6 and a mw the position substantiauiy opposite the die cavity, as shown in Fig. 9, by engagement of the heads 84 by the head 88 of the ram 26 when the latter descends.

When the web W is advanced by the said rolls 65 32 and 33, the parts occupy the position shown in Fig. 6 with the upper edge of the gauge plate 63 flush with the upper edge of the block 65, and with the lower end of the punch 6 4 just above the 76 mold cavity 66 and slightly elevated above the upper end of the gauge plate to leave a space 85 substantially in alinement with and tangential to the upper edge of the mold cavity and of a width substantially equal to the thickness of the web W. As the web is advanced over the top of 7' the block n, and between the latter and a guide having an open side displate 86 supported by the uprights 36, it passes through the space 85 into the mold cavity 66, and in the course of said advance is caused, by engagement of its forward end with the curved wall of said molding cavity, to be bent as indi- -cated in Fig. 6 into the position shown in Fig. 8.

The -parts are so designed that the advance of the web by the feed rolls at each operation of the latter is just suilicient to bring the end of the web into substantially the position shown in the latter figure, that is to say, to cause the web to traverse the curved face of the die cavity 66 and bring its end |8| substantially into engagement with the gauge plate 63 which at this time is in the elevated position shown in Fig. 6. The advance of the web is then interrupted, and the arm 8| is engaged by the plunger 86to depress the gauge plate 63 from the position shown in Fig. 6 into that shown in Fig. 8. Thereafter, the heads 84 of the rods 8| are engaged by the ram lhead 88, and the punch 64 depressed from the position shown in Fig. 8 into that shown in Fig. 9, the plunger 86 yielding during this operation. At its side adjacent the block 65 the punch 64 is formed with a cutting edge 88 which cooperates with a cutting edge 88 on said block, while at its opposite side adjacent the die 62 it is formed with a curved bending edge |88, being of slightly less length at the latter side than at the former, while the width of the said punch as well as that oi.' the gauge plate is substantially equal to the width of the open side of the die cavity 66.

cutting edges 88 and 88 to form a detached sheet and thereafter to bend the rear portion of said sheet, previously occupying the space 85, down,- wardlyto cause the sheared edge to abut the original edge |8| of the sheet to form a butt joint |82.

Supported on the .bed 22 (see particularly Figs. 2 and 3), and guided for rotation about a. raised disk secured to or formed integral with the latter, is a dial ring or annular carrier ||2. Said dial ring is formed about its periphery with notches ||3 to receive a pawl ||4 pivotally carried by the head 5 of an oscillating arm ||6 pivoted to a stud |I| projecting from the underside of the bed, the latter being cut away, as indicated at ||8 in Fig. 3, to permit oscillation of said head. The arm |I6 is connected by links ||9 and ||8' with one arm |28 of a bell crank pivoted at |2I to one of the uprights 25, and the other arm |22 of which is connected by a link |23 with an eccentric strap |24 encircling an eccentric |25 on the shaft 38. y

The arrangement is such that, as the arm ||6 is oscillated, the dial ring ||2 will be angularly advanced an amount corresponding to the spacing of successive notches ||3 at each rotation of the shaft 38. Also cooperating with the notches |I3 is a spring pressed holding pawl |3| guided on the bed 22 for movement radially of the ring and having connected thereto one arm of a lever |32 pivoted at |33 to said bed and carrying at its opposite end a roller |34 cooperating with a cam plate |35 on the head ||5. The arrangement is such that, as the head ||5 is moved in a counter-clockwise direction, as viewed in Fig. 3, the pawl ||4 will be moved from one oi the notches ||3 into a position to engage the next adjacent notch, the pawl |3| this time holding the ring against movement, and as the head ||5 approaches the limit of this retrograde movement, engagement of the cam |35 with the roller Consequently, as the punch is de- Y pressed, it operates to shear the web between the |34 will cause the pawl 3| to be released, subsequent movement of the head I |5 in a clockwise direction causing the pawl ||4 to advance the ring, the pawl |3| at this time riding upon the edge of the ring between adjacent notches and snapping into the next adjacent notch when the advancing movement is completed.

Carried by the dial ring ||2 is a series of matrices or holders |36, the form of one of which is shown .in detail in Fig. 4. Each of said holders is formed with a longitudinal cavity |31 whose cross section corresponds to that of the die cavity 33, and consequently to that oi' the container body 20 formed as above described. Each of the holders |36 is pivotally mounted on the ring H2 by means of a bifurcated bracket |33 (see also Fig. 10) secured to said ring by screws 3. Each of the brackets |38 carries a pivot pin |33 which is received in a hollow cylindrical boss |43 formed on the corresponding ca rrier |33. 4The disposition of the brackets |38 on the ring |33 and that of the bosses |40 on the\carriers |33 are such that the pivot pins |36 are inclined both to the radius or circumferenceof the ring and to the longitudinal axes of the holders |33, the arrangement being such that, when the holders are in the horizontal positions indicated by A and B in Fig. 3, they will be disposed radially of the ring with the faces |4| (Fig. 4) of their cavities substantially vertical, but when tilted upon their pivots into the positions shown at C and 'D in Fig. 3, they will be twisted to bring one oi' their edges, indicated at E in Figs.` 2, 3, 4, 11 and 12, into` a position relatively lower than the others. For purposes of simplicity only a relatively few of the holders |36 are shown in Fig. 3, and also in certain other figures, but it will be understood that there is a continuousannular series of these holders corresponding `in number and angular spacing to the notches I3.

Bolted or otherwise squred to the upper face of the disk v||| is the-lower flange |30 of a stationary annular or cylindrical cam member |5| (see Figs. 2, 3 and 15) having at its upper edge an outstanding ange |52 terminating at its outer edge ina down-turned flange |53 which, through about one-half of i its circumference, is relatively short, as shownv in Fig. 10 andindicated at F in Figs. 3, 5, and 15, and through the remainder of its circumference is relatively llong or deep, as shown in Figs. 11 and 12 and indicated at G in Figs. 3, 5 and 15, the short and deep portions being connected by inclined portions H as shown in Figs. 5 and 15. vThe holders |36 are formed with surfaces |54 (Figs. 4, 11 and 12) to engage the lower edge of the depending flange |63, and when opposite the short portion F of the latter said holders are moved into the horizontal radial position shown in Fig. 10 and at A and B in Fig. 3, but when brought into engagement with the deep portion G thereof will be turned into the inclined and'twisted position shown in Figs. ll and 12 and at C and D in Fig. 3. Means are provided to move the holders into horizontal position and to ensure registration of each matrix cavity |31 with the die cavity 66 when each matrix or holder |36 reaches the position indicated in Fig. l0 and at A inFig. 3. As shown most clearly in Fig. 10 said means comprises a ilxed element |33 the curved upper extremity a of which moves the inner end of each matrix in a direction to bring the outer end thereof down into alinement with said die cavity, the curved upper extremity b of a stop 6|, in conjunction with the low ,pox-tion F of the cam |5|, serving to limit said down- AAs each of the holders Vconsidered the receiving position, indicated at A alinement Ayield transversely of ward movement. Referring to Figs. 2, 3, 6, 8, 9 and l0, there is located within the forming cavity 33 of the die 62 a mandrel |53 which assists in the shaping of the sheet material in said cavity as above described, and which is guided for longitudinal movement in the support 6I, said mandrel being connected by a link |56 with an arm |51 carried by a shaft |58 journalled in bearings in the uprights 25. The shaft |58 also carries a bell crank 200, the arm |62 of which is pivotally connected with one end of a forked member |33 slidable in a bracket |34 attached to one of the uprights 25. 'I'he forked end |35 of said member |33 embraces an enlarged portion |66 on the shaft 30, and is provided with a rollery |31 (Figs. 2 and 5) which is adapted to engage an edge cam |33 carried by said shaft.v A spring |39 interposed between thebracket |66 and a collar |10 adjustably secured tothe forked member |53 keeps the cam roller |61 in engagement with said Cam.

`The mandrel ,|55 isy formed with an ejecting shoulder |1| which, during the forming oper- -After the completion of the forming operation, as shown in Fig. 9, the

I mandrel |55 is moved by the mechanism above described toward the left as shown in Figs. 2 and 3, .or downwardly las shownl in Fig. 7, whereupon the shoulder |1| engages the end of the formed container body and ejec-ts the same fromthe mold cavity 66. |36 reaches what may be in Fig. 3, fthe` cavity |31 therein is brought into with the mold cavity 66, as previously described, and as the container body is ejected from the latter it is moved into4 the former in such a position that the butt joint |02 thereof is adjacent the edge-E of a holder. It will, therefore, be seenthat when each holder is moved into the tilted or twisted position shown in Fig. 11, and indicated at C in Fig. 3, the container body will be supported in an inclined position with saidgbutt joint lowermost.

A stripper 9 (see particularlyFigs. 7 and 10) mounted in the die support 6| in a mannerto mandrel |55 as the container body is moved out of the forming die into the holder, is adapted to prevent retraction of the body from the holder' when said mandrel is withdrawn.. A

At a suitable station, indicated at `J in Fig. 3, during the travel of each holder or matrix in inclined and twisted position from the position C,'

meansare provided for applying a cementing liquid to the joint |02 to unite the abutting edges of the formed sheet intoa substantially integral structure. Said liquid may compri'se'a liquid cement, but where a plastic material, such as cellulose acetate is used, a suitable solvent for such material, such as acetone, is preferably employed. Y

The mechanism lfor supplying the cementing liquid at the station J is illustrated in Fig. ll and comprises a reservoir |12 for the cement or solvent from which the latter is drawn by a suitable pump P periodically operated through a lever |13 by a push rod |14 actuated by a lug |15 secured to and moving downwardly with the -ram 26 (see also Fig. 5). -The push rod. |14 is the line of `travel of the mentary to that of said. cavity.

cement or solvent is discharged through a tube |19 upon the upper end of the joint |82, whence it flows by gravity downwardly along said joint to the lower end thereof. l

In order to dry the cement, or evaporate the solvent, applied as above described, the container body in each holder, as the latter travels from the station J -to the position D, is subjected to a blast of air or other suitable gaseous medium supplied from a suitable source (not shown) through a pipe |86, Fig. 3, to an arcuate tube |81 arranged concentric with the ring ||2 and adjacent to the upper and outer ends of the containers |36 as they are moved therealong,v

said tube being provided with a series of perforations |88 (Fi'g. 12) arranged to direct such a blast into the cavities |3'| of the holders |38 as they are moved successively past the several perforations.

As each holder |38 reaches the discharging position, indicated at B in Fig. 3, the completed container body is ejected therefrom by mechanism shown in Figs. 2 and 3; Said mechanism comprises a plunger |89 guided in a bracket |98 bolted or otherwise secured to and rising from the disk said plunger being so arranged that, as each holder |36 is brought into the position B, the cavity |31 will be brought into alinement with said plunger, which is of a shape comple- To ensure coaxial alinement of the completed container body with the plunger |89, means, similar to that described to produce registration of the cavity |31 of each matrix |38 with the die cavity 88, is employed. Such means comprises elements |88 and |8| corresponding to the elements |88 and IBI respectively. The plunger |89 is connected by a link |9| with one arm |92 of a bell crank mounted to oscillate on a post |93 rising from said disk the other arm |98 of said bell crank -being connected by a link |98 with the ann |98 of the bell crank 288 previously described.

The container bodies 28, as successively ejected from the holders |38 as above described, are received in compartments in an endless travelling conveyor 286 (Figs. 3, 5, and 14) whence they are carried to a suitable point of delivery. The conveyor 286 is intermittently driven, in synchronism withthe operation of the ejecting mechanism above described, to bring the several compartments therein into position to receive the successively ejected container bodies, by means of sprockets 281 and 288 connected for rotation in unison by a chain 289, and the former of which is connected by a chain 2|| constituting one element of a Geneva stop mechanism, the other element 2I2 of which is continuously rotated through chain and sprocket gearing 2 I3 from the shaft 38. A

I claim: f

1. The method of making hollow bodies from sheet material which includes bending a sheet of said material upon itself to bring its opposite edges into abutting relation and thereby form an open ended tubular body, holding said sheet in such condition while supporting said body in inclined position with the joint between said abutting edges-lowermost, and directing a ce` muenting liquid into the upper end of said body upon the upper end of said joint and permitting the same to ilow downwardly therealong.

2. The method of making hollow bodies from sheet material which includes bending a sheet of said material upon itself to bring its opposite 2|8 with a star wheel i edges into abutting relation and thereby form an open ended tubular body, holding said sheet in such condition while supporting said body in inclined position with the joint between said abutting edges lowermost, directing a cementing liquid into the upper end of said body upon the upper end of said joint and permitting the same to flow downwardly rtherealong, and thereafter directing a stream of gaseous fluid into said end and upon said joint.

3. The method of making tubular bodies which includes advancing one edge of a sheet of material against acurved concave surface and thereby causing said edge to follow said surface and bend a portion of said sheet into a correspondingly curved form, and thereafter bending another portion of said sheet to bring the opposite edge of said sheet into abutting relation with said first-named edge.

4. The method of making tubular bodies which includes advancing one edge of a sheet of material against a curved concave surface and thereby causing said edge to follow said surface and bend a portion of said sheet into a correspondingly curved form, bending another portion of said sheet to bring the opposite edge of said sheet into abutting relation with said first-named edge and thereby form an open ended tubular body, suppofting said body in inclined position with the joint between said abutting edges lowermost, and directing a cementlng liquid into the upper end of said body upon the upper end of said joint and permitting the same to flow downwardly therealong. A

5. The method of making tubular bodies which 3 includes advancing an end edge of a web of sheet material against a curved concave surface and thereby causing said edge to follow said surface and bend the adjacent portion of' said web into a correspondingly curved form, and thereafter cutting said web transversely and bending the severed edge of the detached portion into abutting relation to said first-named edge.

6. In a' machine for forming tubular bodies from sheet material, in combination, a die having a cavity therein of the cross sectional shape of the body to be formed and provided with an open side and a curved concave inner surface, means for advancing a sheet of said material into said cavity in a direction substantially tangential to said surface, and means for bending the rear portion of said sheet across' the open side of said cavity.

7. In a machine for forming tubular bodies from sheet material, in combination, a die having a cavity therein of the cross sectional shape of the body to be formed and provided with an open side and a curved concave inner surface,

means for advancing the forward end of a web 6,

of said material into said cavity `in a direction substantially tangential to said surface, and means for severing said web and bending the detachedportion thereof across the open side of said cavity.

8. In a machine for forming tubular bodies from sheet material, in combination, a die having a cavity with an open side and a curved concave inner surface, a gauge plate movable between a position to substantially cover the 7 open side of said cavity and a position to expose the same, a bending member alined with said gauge plate and movable between a position above said cavity to a position below the same, means for advancing a sheet of material be- 1 tween said gauge plate and bending member into said cavity in a direction substantially tangential tothe surface thereof, and mechanism for moving said gauge plate and bending member from their rst named to their second named positions to cause said bending member to bend the rear portion of said sheet across the open side of said cavity.`

9. In a machine for forming tubular bodies from sheet material, in combination, a die having acavity with an open side and a curved concaveA inner surface, a gauge plate movable vbetween a position to substantially cover the open side of said cavity and a position to expose the same, a combined cutting and bending member alined with said gauge plate and movable between a position abovesaid cavity to a position opposite the` same, means for advancing the forward end of a web of material between said gauge plate and bending member into said cavity in a direction substantially tangential to the surface thereof, and mechanism for moving said gauge plate and member from their iirst named to their second named positions to cause said bending member to sever said web and bend the detached portion thereof across the open :side `of said cavity.

10. In a machine for making tubular bodies from sheet material, in combination, mechanism for bending a sheet of said material into tubular form with opposite edges abutting, said mechanism including a die having a cavity therein of the cross sectional shape of the body to be formed, a matrix having a cavity corresponding in shape to said die cavity and in which the bent sheetis held until said abutting edges are united, and means for transferring the bent sheet from the die cavity to the matrix cavity.

11. In a' machine for making tubular bodies from sheet material, in combination,` mechanism for bending a sheet of said material into tubular form with opposite edges abutting, said mechanism including a die having a cavity therein of the cross sectional shape of the body to be formed, a series of matrices each having a cavity corresponding in shape to said die cavity and in which the bent sheet is held until said abutting edges are united, means for moving said matrices to bring them successively into register with said die,` and `means for transferring the successively bent sheets from the die cavity to the cavities of successive matrices.

12. In a machine for making tubular bodies from sheet material, in combination, mechanism :for bending a sheet of said material into tubular form with opposite edges abutting, said mechanism including a die having a cavity therein of the cross sectional shape of the body to be formed, a series of matrices each having a cavity corresponding in shape to said die cavity and in which the bent sheet is held until said abutting edges are united, means for moving said matrices to bring them successively into register with said die, means for transferring the xsuccessively bent sheets from the die cavity to the cavities of successive matrices, and means for successively ejecting the completed bodies from said matrices.

13. In a machine for making tubular bodies from sheet material, in combination, mechanism for bending a sheet of material to bring its opposite edges into abutting relation and supporting the body so formed in inclined position with the joint formed by the abutting edges lowermost,

visaid bending means,

and means for supplying a cementing liquid to the upper end of said Joint.

14. In a machine for making tubular bodies from sheet material, in combination, mechanism for bending a sheet of material to bring its opposite edges into abutting relation and supporting the body so formed in inclined position with the joint formedlby the abutting edges lowermost, means for supplying a cementing liquid to the upper end of said joint, and means for thereafter directing a blast of air into said body to dry said liquid.

15. In a machinegfor making tubular bodies from sheet material, in combination, means for bending a sheet of material to bring its opposite edges into abutting relation and thereby form such a body, a matrix having a cavity corresponding in shape to said body, means for inserting said body into said cavity, means for so positioning said matrix that said body is inclined with the joint formed by said abutting edges lowermost, and means for supplying a cementing liquid to the upper end of said joint.

16. In a machine for making tubular bodies from sheet material, in combination, mechanism 'I said matrix into such position that the body i therein is inclined with the joint formed by said abutting edgeslowermost, and means for supply-ing a cementing liquid to the upper end of said joint.

,17. In a machine for making tubular bodies from sheet material, in combination, means for bending a sheet of said material to bring opposite edges into abutting relation and thereby form such a body, a series of matrices having cavities to receive the bodies so formed, means for moving saidmatrices to bring them successively into position to receive said bodies from means for turning said matrices, as they are moved out of said position, into an inclined position, and means for discharging a cementing liquid into the upper ends 'i of said ibodies and upon the abutting edges of said sheet While said matrices are in the llatter position.

18. In a machine for making tubular bodies from sheet material, in combination, lmeans for bending a sheet of said material to bring opposite edges into abutting relation and thereby form such a body, a series of matriceshaving cavities to receive the bodies so formed, means for moving said matrices to bring them successively into position to receive said bodies from said bending means, means for 'turning said matrices, as they are moved out oiv said position, into an inclined position, means for discharging a cementing liquid into the upper ends of said bodies and upon the abutting edges of said sheet while said matrices are in the latter position, and means for subsequently ejecting the finished bodies successively from said matrices.

19. In a machine for making tubular bodies from sheet material, in combination, means for cavities to receive the bodies so formed, means for transferring said bodies from said bending 10 said bodies ejected by said ejecting means, a cam :ring engaged by said matrices and having a po'rtion adapted, as said matrices are moved from receiving to ejecting position, to turn the same upon their pivots into an inclined position, and means for discharging a cementing liquid into the upper ends of said bodies and upon the abutting edges of said sheet while said matrices are in said inclined position.

FREDERIC A. PARKHURST. 10 

